For me personally, no.
The only reason I use it is because Discourse does not work without it. I’ve also experienced first hand that it is far from perfect (it lost us around 30 days of posts on MetaRuby because an older container was in ‘limbo’ yet everything appeared to be working fine).
I would not use it for any of my own projects and I can’t really see why anyone would want to use it when a server can handle multiple sites/apps with ease. I can see why software vendors like Discourse would use it as they don’t have to support lots of OS’s, configs etc, but for everyone else, I really do question the value.
Here is a fairly big thread on Docker & Elixir that you might also find of interest:
